1891 $10 PR64 PCGS. The 1891 is on an equal footing with the
1889. It is also the rarest denomination of the year. Only 15
pieces are believed extant today out of the 48 proofs that were
struck. The fields are deeply mirrored with the orange-peel effect
that is often seen on gold proofs from the 1880s and 1890s. The
devices are lightly frosted with some cameo effect on each side,
but probably not quite enough to warrant a cameo designation on the
insert. A few light alloy spots are seen in the lower obverse field
between Liberty's neck and stars 1 and 2. Just the slightest haze
is seen on the obverse. (NGC ID# 28FW, PCGS# 8831)